Machine for rolling gears.



Patented Dec. l6, I902.

w. L. JONES. MACHINE FORROLLING GEARS.

. (Application filed Oct. 5, 1901.)

(No Model.)

5 Sheets-Sheet l.

lhvenlor Attomgys Witnesses:

. s 2 2 r 0 m 0 m 9 e f uw m h l n A 1 S 8 6 i v m e n 8 h D 5 ll 0 6 t I I I l A l I I l I! n 9 t .a P

(Application filed Oct. 6, 1901.)

w L JONES MACHINE FOR ROLLING GEARS.

7(N0 Model.)

Witnesses:

Patented Dec. I6, I902 w. JONES. MACHINE FOB ROLLING GEARS.

(Application filed Oct. 5, 1901.)

5Sheats-Sheet 3.

(No Model.)

nuumuuuummumnl Inventor Witnesses:

Attorneys No. 7|6,24l. Patented Dec. I6, I902.

I w. L. JONES.

MACHINE FUR ROLLING GEARS.

(Application filed Oct. 5, 1901.)

5 Sheets-Shad 4.

(No Model.)

Witnesses Inventor Afiomeys Patented Dec I6, I902.

W. L. JONES.

MACHINE FOR ROLLING GEARS.

(Application filed Oct. 6, 1901.) (No Model.) 5 Sheeis-Sheet 5.

MMX

Attorneys UNITED STATES i PATENT O FICE.

- .WILLIAM Looms, OF.PARKVIEW, -NEW JE'RsEY,

MACHINE FOR ROLLING GEARS.

\ SPECIFICA'ITON forming part of LettersPatent No. 716,241, dated December 16, 1902. i Application iiled October 5,1901. Serial No. 77,698. (No model.)

To all whmn. it may concern:

Be it known that. I, WILLIAM L. JONES, a citizen of the United States, residing at Parkview, in the county of Essex and State of New Jersey, have invented a certain new and useful Improved Machine for Rolling Gears, of

which thefollow'ing is a description. I

My invention relates to an improved machine for makinga gearfrom a cast or wrought blank by a rolling operation, whereby the resulting article will be as perfect as acut gear and will possess the strength and durability of a compressed gear. i

. It has been proposed in the manufacture of,

pinion'sof relatively small size to subject the hot billet 'to suchan enormous pressure by the action of a punch in a female die that the metal will be displaced andcaused to enter the teeth out in such die to forma complete compressed pinion.. In carrying on such an operation enormous-pressuresare necessary,

involving expensive machines and operations,

1 while the possible diameter of the gear which i j 1 can be made by such a process is necessarily limited.

With my present apparatus I am enabled to makea compressed gear or a gear that possesses all the advantages of acompressed gear of anydesired diameter andat relatively low cost.

"In carrying the invention into-efliect I em ploy asuitable female die, which maybe made sectional-or not and which is formed on its interior with the desired contour in negative to be given to the complete article. Within this die is placed a blank, either cast or wrought, the teeth of which fit more or less closely within the corresponding recesses of .the die. The rim' of the blank so formed is no madethicker than is desiredin the complete article. Such a blank being suitably heated and the 'blank and rollers being moved relatively, the'rollers tend to reduce the thickness I I 1, of therim, so as to displace the metaland force i 1 the teeth of theblank in timately'into engagement withthe corresponding recesses of the "die. f-In this waythe resulting gear will be 1 case with either cast or cut gears. At the same formed with perfectteeth, and the metal having been s'ubject'edto powerful compression will be tougher and more durable than is the I iltime since the displacement of the metal is duce friction.

efiected by the action of rollers which effect their operation progressively the gears can be constructed in simpler and cheaper machines and at a lower cost than if the displacing pressure is applied simultaneously to all portions of the gear.

In order that the invention may be-better.

it; Fig. 6, a section on the line 6 6 of Fig. 5;

Fig. 7, a section on the line 7 7 of Fig. 5; Fig. 8, a separate sectional view of a suitable blank for use with the improved machine, and Figs. 9,10, 11, and 12am detail views of a modification of the table. a

In all of the above views corresponding parts are represented by thegsame numerals of reference.

A suitable base 1 supports two heavy housings 2 3, having guides at on their inner faces. Vertically movable in these guides is a bed 5, which is carried on screws 6, which latter are in turn sustained by lugs 7, cast to the housings 2 3. The screws'6 are simultaneously rotated through bevel-gearing 8 from an auxiliary shaft 9, carrying tight and'loose pulleys 10 and driven from any suitable source of power. Mounted to rotate on the bed 5 is a table 11, antifriction-balls 12 being preferably interposed between the two to re- The tablell is provided with an exterior beveled rack 13, with which a pinion 14 meshes, the latter being carried on the main driving-shaft- 15, having a fly-wheel 16 at its end and having tight and loose pulleys 17. Carried by the table 11 is a female die 18, the interior of which is cut or otherwise formed to represent in negative the gear 3 which is to be produced. Preferably this female-die is made sectional, so that after-a gear has been formed the sections of thefdie' may be separated to permit the gear'iiofbe easily removed; but the die need notbe'made justing-plate 21.

sectional and may be continuous, the gear being removed after it has slightly contracted on cooling by a direct longitudinal'movement either from. above or below. In the drawings I illustrate the die as being formed of a series of radial sections which cooperate together, each section being provided with a depend- .ing lug 19, which works in a spiral groove in an adj usting plate 21, the latter being carried directly on the table 11 and being rotatable independently thereof by means of a lever 22. It will be obvious that by partially rotating the adj usting-plate 21 the sections of the die will be simultaneously moved radiallytoward and away from each other to open or close the die. Mounted above the adjusting-plate 21 is a stationary plate 23, supported on two pedestals 24, whereby the operating-lever' 22 may work between said pedestals to give the desired partial rotary movement of the adjusting-plate 21. The plate 23 is provided with sl0ts'25 therein, in which work the lugs 19, which depend downwardlyfrom the sections of the die and which cooperate with the spiral groove 20 in the ad- In order to properly guide the sections of the die, I employ an annular plate 26 above the same, which plate is provided with spacing-sleeves 27; through which bolts 28 extend, whereby all the parts will beheld firmly together, as will be understood.

Mounted in slots in the housings 2 3, so as to be vertically movable therein, is a frame 29, suitably supported by a truss 30, so as to be of very rigid construction. Carried by this frame are hangers 31 ,whir-h carry the flanged compressing-rollers 32.

The hangers are adjustable radially in the frame 29 by screws 33, provided with integral collars 34, which work between the outside of the frame 29 and suitable notched plates 35, screwed to said frame, whereby by rotating the screws'33 the hangers 31 may be adjusted radiallyin either direction. When once adjusted, the hangers may be locked rigidly in position by bolts 36. In Fig. l I show the frame as being provided (in dotted lines) with two of the compressingroliers 32, while in Figs. 3 and 4 I illustrate the frame adapted to receive six of these rollers. Obviously any number of the compressing-rollers may .be employed. During the work of rolling the gear'within the die the frame 29, carrying the compressing-rollers, is

moved downward to displace the metal of the blank, as will be explained. This movement may be imparted to the frame in any suitable way, but preferably it is derived from the power which rotates the die relatively to the compressing-rollers I therefore preferably make use of a pair of heavy connectingwods 37, which are attached at their upper ends to knuckles 38, whichcxtend out from the frame 29 and work in the slots in the housings 2 3 and which connecting rods at their-lower ends are formed with eccentric-straps 39, which engage over eccentrics 40 on'a counter-shaft 41. For the purpose of adj-ustin g the connecting-rods -a hub 55.

37 they are provided with turnbuckles 42 therein, and in order that the connecting-rod at the left, Fig. 3, may pass the shaft 15 it is provided witha loop, as shown, through which the shaft may extend. The counter-shaft 41 at its outer end is carried by a bearing 43,-

between which and the housing 2 it is provided with a worm-gear 44. This'worm-gear is driven by a worm 45 on a short shaft 46, carried in suitable bearings 47 from the housing 2. The main power-shaft 15 is provided with 'a pinion 48, meshingwitha spur-gear 49 on a short shaft which is mounted in bearings 50, and by means of bevel-gearing 51 power is transmitted from the gear 49 to the shaft 46.

The form of my improved machine is illustrated particularly in Fig. 8, showing the same in cross-section, although in Fig. 6 I illustrate (in dotted lines) the blank'in position within the female die in order that its relative shape and size may be understood. Referring to Fig. 8, I illustrate the blankas having a rim 52,formed with teeth 53, which fit in the corresponding recesses formed in the female die,'preferably with a relatively'close fit, with a web 54, either closed or open to constitute spokes, and with The rim 52 of the blank is made thicker than is desired on the finished gear and preferably is formed with two curved ribs 56 to offer the'desi'red additional metal, which in the carrying on of the process isdisplaced'into the gear-teeth. The hubmay be made hollow or solid, as isdesired, in the lat ter case being bored out after the gear is formed. The blank of substantially the form indicated'is preferably cast, although obviously it may be wrought or otherwise produced. The top of the plate 23 is provided with an annular shoulder 57, the periphery of which conforms with the interior of the rim of the wheel and, together with the flanges of the rollers 32, prevents the metal under compression from spreading inwardly, thus blank on whichI operate with forcing all of the surplus metal into intimate contact with the teeth of the female die 18'.

In Figs. 9, 10, 11, and 12 "I show a modification of the annularshoulder 57, in which the shoulder'is made adjustable, so as to provide for the contraction of the same to allow for the ready removal of the finished gear. In this modification the plate 23 is shown as having a central circular recess, in which is seated a plate 58, having radial shouldered slots 59, in each'of which is mounted a Slid ing block 60, provided witha segmentalwing 61 and a projecting tongue 62, which completely fills the slot 59 under thewheel to be compressed. In the inner end'of each slot is adjustably secured an anchor-block 63, and connecting the anchor-block and the sliding block 60 is a toggle-joint 64, provided with an In operating my improved rolling-machine I take a blank of suitable form, heat it to the desired temperature, and place it within the female dielS from above, so that it rests on,

bed, so that the blank will be moved beneath the compressing-rollers 32. Through the gearing 48, 49, 51, 45, and 44 the shaft 41 will be slowly rotated, and by means ofthe connecting-rods 37 the frame 29 will be moved slowly downward, forcing the compressing-rollers into the blankand imposing the desired heavy pressure on the metal, so as to displace the ribs 56 or to otherwise flatten the rim, and thereby cause the metal forming the teeth of the blank to be forced intimately into coniactwith the corresponding recesses in the die, whereby the teeth on the finished gear will be completely By thus. subjecting the rim of the blank to heavycompression the metal thereof will be made as tough as with a compressed wrought gear, while all the accuracy of a cut gear will be'secnred. Byadjusting the compressingrollers 32 radially the machine can be made to operate on gears of different sizes, it being i only necessary to make use of proper female dies'for the purpose. After the shaft 4lhas made a complete half-turn the frame 29 will obviously commence to ascend, so as to relieve the pressure on the gear, and the screws 6 are then reversed to lower the bed 5 and perm'it the finished gear to be removed, which can be done either by opening the sections of the female die, if the latter be sectional, or by forcing the gear out of the same by a direct longitudinal movement.

I prefer to make the compressing-rollers with flanges and the plate with a stationary or a movable shoulder, as shown, in order to prevent the displaced nietal'of the blank from flowing inwardly toward the hub instead of outwardly toward the periphery; but with blanks of certain forms such flanges may be dispensed with. I

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is as follows:

1. In a machine for rolling gears, the combination with a toothed female die in which a gear-blank is-earried', of a com pressing-roller cooperating with said. ,die for displacing the metal of the blank therein, and, means for relatively moving said die and compressingroller, substantially asset forth. Y 2. In amachine forrolling gears, the comand accurately formed.

binationwith a toothed female die in which a gear-blank is carried, of aradially-adjustable com-pressin g-roller cooperatin g with said die for displacing the metal of the blank therein, and means for relatively moving said die and eompressingroller, substantially as set forth.

3. Ina machine for rolling gears, the combination with a toothed female die in which a gear-blank is carried, of a series of com pressing-rollers cooperating with said die for displacing the metal of'the blank therein, and

means for relatively moving said die and compressing-rollers, substantially as set forth.

4. In a machine for rolling gears, the combination with a toothed female die in which a gear-blank is carried, of aseriesof radiallyadjustable compressing-rollerscooperating with said die for displacing the metal of the blank therein, and means for relatively moving said die and compressing-rollers, substantially as set forth.

5: In a rolling-machine for the purpose described, the combination with a sectional female die in which a blank is carried, of a compressing-roller cooperating with said die for displacing the metal of the blank therein,and

means for relatively movingsaid die and compressing-roller, substantially as set forth.

6. In a rolling-machine for the purpose described, the combination with a sectional femaledie in which a blankis carried, of a radially-adjustable compressing-roller coo-perating with said die for displacing the metal of the blank therein, arid means for relatively moving said die and compressingrolller, substantially as set forth.

7. In a machine for rollinggears, the combination of a toothed female die for contaim' ing a gear-blank, a compressing-roller coop erating with said die for engaging the blank and compressing thelatter in said die, means for relatively moving the die and said roller to cause the roller to engage successive portions of the blank, and means for moving the roller toward the die to displace the metal of the blank, substantially as set forth.

8. In a rolling-machine for the purposedescribed, the combination of a female die for containing a blank, a compressing-roller cooperating with said die for engaging the blank and compressing the latter in said die, means for relatively moving the die and said roller to cause the roller to engage successive portions of the blank, means for moving the roller toward the die to displace the metal of the blank, and means fox-adjusting the die toward and away from the compressing-roller,

substantially as set forth.

9. In a rolling-machine for the purpose described, the combination with a rotatable table and a female die carried thereon, of a non-rotatable frame, a compressing-roller carried by said frame and cooperating with the die, and means for rotating said table, sub

stantially as set forth.

10. In a rolling-machine for the purpose descrli-bed, the combination with a rotatable table and a femaledie carried thereon, of a non-rotatable frame, acompressing-roller car ried by said frame'and cooperating with the die means for rotating said table, and means for moving the frame toward and away from the die to engage the roller with the blank, substantially as set forth.

11. In arolling-machine for the purpose described, the combination with a rotatable table and a female die carried thereon, of a 'non-rotatablefrarne, a'compressing-roller carried by said frame and cooperating with the die, means for rotating said table, means for moving the frame toward and away from the die to engage the roller with'the blank, and means for adjusting the table vertically with respect to said frame, substantially as set forth.

scribed, the combination with a sectional fe- 7 male die in which a blank'is carried, of a series of radially-adjustable compressing-rollers cooperatingwith said die for displacingthe metal'of the'blank therein, and means for relatively moving said die and compressingrollers, substantially as set forth. 7

14. In a rolling-machine-for the-purpose deand means for adjusting the table vertically with respect to said frame, substantially as set forth.

15. In a rolling-machine for the purpose de- Q scribed, the combination with a rotatable table, and a sectional female die carried by said table, of a non-rotatable frame, a compressing-roller carried by said frame and cooperating with the die, means for rotating said table, means for moving the frame toward and away from the die to engagethe roller with the blank, and means for adjustin; the table vertically with respect to said frame, substantially as set forth.

16. ha rolling-machine, the combination with a table, and a die carried thereby for containing a blank, of a compressing-roller, means for adjusting said compressing-roller radially, means for effecting a relative rotation of the roller and die, and means for eifecting a relative movement between the roller and die toward and away from each other, substantially as set forth.

This specification signed and witnessed this 12th day of September, 1901.

Y WM. L. JONES. Witnesses: v

Jso. ROBT. TAYLOR, 'JOHN LOUISLOTSCH. 

